Separating materials

US5453186A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Werner Muller · East Greenwich, US
• Joachim Kinkel · Guldental, DE

Key dates

• Filing date: Jan 20, 1995
• Grant date: Sep 26, 1995
• Expiry date: Jan 20, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D15/3804
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention is directed to separating materials comprising a primary or secondary aliphatic hydroxyl group-containing support coated with at least one covalently bonded polymer, wherein PA1 (1) the covalently bonded polymers are bonded to the support by graft polymerization via the .alpha.-carbon atoms of the hydroxyl groups, and PA1 (2) the polymer contains identical or different recurring units of the formula I ##STR1## wherein R.sup.1 is H or CH.sub.3 ; PA2 Y is ##STR2## R' and R" are each independently H or CH.sub.3, R.sup.2 and R.sup.3 are each independently PA3 (a) C.sub.1-10 -alkyl, phenyl, phenyl-C.sub.1-10 -alkyl, cycloalkyl, C.sub.1-10 -alkyl-cycloalkyl or C.sub.1-10 -alkylphenyl, PA3 (b) one of the above groups in (a) monosubstituted or polysubstituted by each of amino, mono- or dialkylamino, trialkylammonium, carboxyl, or sulfonyl, PA3 (c) a cyclic or bicyclic radical having 5-10 C atoms, wherein one or more CH or CH.sub.2 groups is replaced by (i) N or NH, (ii) N or NH and S, or (iii) N or NH and O, or PA3 (d) one of R.sup.2 or R.sup.3 is H; PA2 and wherein R.sup.2 and R.sup.3 are coordinated with one another so that either both radicals are acidic or basic, or one o…